Electric-arc lamp.



G. J. TOERRING.

ELECTRIC ARC LAMP.

APPLICATION FILED HAYS, 1906.

Patented May 4, 1909.

2 SHEETS-SHEET 1.

G J. TOERRING.

ELECTRIC ARC LAMP.

APPLICATION TILED MAY3,1906.

Patented May 4, 1909.

2 SHEETS-SHEET 2.

fiuucnloz mmm Esr AVAILABLE cop" I H p I CIiRISTIXN J. Tonntizen (1 th United States, residing inty'otEhiladelphia, State invented anew and p lot which the fol- I f-in yinfvention-is to secure s npli'clty at c trol of the carbon feed in' nvertedfllani'p. I-

l 1 v f her object -ofjihyfiny'ention is to rav'ity tid 20i alalnp' of'inverted type, rthjef objector my 'iiiyerrtien is to rea plya-eo sn -'Wi'ght lfecd,'=avoid et hing crate carboii carbon *Affu he'i obje, pen's .t irijr'inrentio'li'is to dis wit the, use of ob'jectionable springs il'irr'eaus of supporting an rbon against gravity. v 's fau elevation partly'in section 'of a lamp inb'o'dying my invention. Fig, 2 represent enlarged elevation also ection; showing a portion of the fzl ig. Fig; represents a longin line 3 3 in Fig: 2; Fig.

' ju'po'n the line 4-4 of ents a plan of part of the Fig; ft. Fig. represents g" eidrepres licate (orreferal'ily cen- ,9 file for 'a' carbon, thejlower or r aitii e: carbon? I, v v v ube time 'a block 3, whioh'fofrms asupport for my counter-weight f .ide'Ty and'tlielloii'ze'r member 5 o'f the dash pot? Qfithe lowe'i ,fhemlie1-=bei1ig preferably thmpiston' -inr l asisho'wnl' v -'lliecylinde1" 1:O'-i its'elfifo rm ro'tection against injur from orfeign matter.- The block "alsoifor iny -solelioid 1.1.

1 is su' porteddir'e'ctly from. rom the block 6} in g c Band insulated therefrom,- I 'prefe1'-ably:.pl a disk 13 to whiclris at- "tached' abolt 1'4 t etpl'atc or disk and bolt irmingia'iconi' iirieh'tymeansof spacing and ttaehin asi g' to:the lamp at the v tachment being byhieans of nut 6; "At 'theepper' end this casing 15'is Letters :Patent. e'pplic'ationiiled May a; 1966. Serial No. 315,056.

' construction be- Patented May 4, 1909.

disk 17, which is insulated from the tube 2 and from the other parts of the interior of the lamp structure hereinbefore. emunera t ed in any suitable manner. The disk l7 'carries preferably porcelain resistance cores 18, 19

usual manner.

pable 9f adjustihent by sleeve 20 in the 1 Upon the top of the disk 17 are mounted In proximity to the disk 17 and in suitable manner I secure the lower reflector 25, which may be fastened to the disk or the casing. l preferably fasten it to the casing 15 by means of set screws 26 engaging a prefer-ably rolled ring 27 in the said casing. The advantage of this construction is that by loosening the set screws 27, the reflector may be dropped throughout all or an desired portion of the length of tlre'casing, or cvcn'removed therefrom oi er ring 28. '.lhe "operative from the p rate or disk 17 by means of rods Within protecting tubes 29 and 30, which may evidently be of anyjdesired number other than two, the rods constituting: conductors insulated from the tubes. 'lhese con- 'ductors convey the current to and lryn the lamp, the current being applied to 01 e (Com by means of the binding posts 31 and 32, which are insulated at 2-33 and 34 i'rom the tubes 29 and and from the support 35 to is attachedby means ofears 37. Itis thus to be seen. that the weight of the lamp resting; upon the suspension 37 is transmitted through the support 35, the rods, the disk 17 and the tube 2 to the block 6, which'supports th'ose operativ'eparts-of the structure whiclrare not supported directly from the plate 17. f 1 "lhe reflector I38 is so arranged as to reflect a nrininiii 1n oflight upon the lower rellecto r 25, either from then re itself or of light which has spaced from, the lamp parts; by means of a beenjnitially re'liecteiil by said reflector 25,

v i. V

and coils 20. I 0110 of these resistances is enrigidity and insulation may of fcourse be ductor and received from the other at and which'tlie suspending: and insulating roller 36 clips 21 for attachment of a globe" .3, which arts of the lamp is supported or more across t re main terminals.

flector causing a most desirable diffusion of a complete gravity control is obtained free from spring complication. The counterbal- U-shaped armature 51, which is consequently drawn into the solenoid or permitbeing reentrant near its central portion and forming a concaved annulus as viewed from below. The object of this construction is that practically the entire light'reflected by the reflector'fSS passes out between its outer edge 39 and the outer edge 40 of the lower rethe light thus distributed. The reflector 38. is supported from the support 35 by means of rods 41, which are adjustable as to height within the sleeves 42 and 43, the rods being held in their adjusted position by means of set screws 44:. The upper carbon is supported by means of bracket 45 from the disk or plate 23. The lower carbon 4 is movable within and to some extent is guided by the tube 2 and is maintained in normal contact with the uppercarbon when no current is flowing through the lam by means of a countenweight system, w ich, with its adjusting clutch construction, forms a material part of my present invention. In the absence of the counter-weight, or when relieved of its control, the carbon-itself and its carbon holder drop of their own weight moving the carbon downwardl T in the tube 2, the arm 46 passing through't 1e slit 47 to permit such movement; lhe chain 48 passes o'ver thepullcy 50, which may be a sheave wheelwhen a chain is used. The chain connects thearin 46 and the counter-weight 49, the junction at each end being formed in any suitable manner so that movement of the one resultsin movement of the other in the reverse direction. By this means, it will be evident that ancingweig t normally lifts 5 the carbon whichat once drops when the weight is lifted. i i

The control of the carbon is efle cted by means of a solenoid, which, in the particular lamp shown, is placed in series with the are and whose current varies therefore directly with the current consumed in the lamp. The lamp may, however, be used either in series or in multi 1e and when in multi le one 'i he solenoid may be replaced by otherelecti-o-mag notic apparatus either in series or shunted across the arc. The solenoid is of the double type and shown at 11. It works upon a ted to be withdrawn therefrom according to the amount of current passing through the j lamp. 'lhesolenoid is preferably attachedto t ough-insul'at'ed from the lower plate of my lamp and the connections herein described are-such as are, esirable for. this position of th solenoid. It will; be evident that the solenoid might instead be otherwise located, as for instan'cem on the upper plate and that the form of nfeciianical connectil'm by means of which its action is brought to bear upon the clutch might be varied while makin use of art of my invention. In the form shown, t e U-shaped armatu'reis susended by means of a rod 52 from a frame or ever 53, (preferably of yoke type, which lever is pivote at 55 Upon one side of the pivot, the lever or frame is provided with a weight 55 for the purpose of overcomin the weight of the U-shaped armature m withdrawing the armature from the maghet after the what I consider the most desirllble form,

namely as consisting of astri or rod whose middle )ortion56 preferably orms the of attachment of rod 52, connecting wit 1 the armature, which rod is shown passin r through an aperture 57 therein, but which might evidently be differently connected. The middle, which may be termed the rear portion of this strip formsthe connection between two side branches, sVhich' are ofthe same general character, being, however, reversal of each other and one of them roviding attachment'for the rod 55. Eac 1 of these arms or side members extends substantially at right angles to the rear. or middle portion, is outwardlyturned at 58, again turns at substantially a right angle at 59 and is turned inwardly at 60 and a portion of it is cut away at '51' within this part 60 for the purposeof permitting movement of a link along the bar 62, thus formed, as best shown in Fig. 2.

The link or hunger 63 enga es the outer end 64 of one member of a clutch 65, the other member of which is engaged by a link point having corresponding connection with the bar formed in the end of the opposite arm. My clutch is formed of two platesfifi, which are pivoted preferably at'or near theircenter at67 .so that theplates can move about this pivot when the solenoid is operated. weight of the rod 55 and its cylinder normally overcoming the weight-of the parts upon the op )osite side of the pivot of this lever, the

.no current in thelamp and the clutch rests at a point nearer its center upon the top of the guide or tube .2 except as hereina ter described. The result is that the outer ends of theclutc'h arms 63' are held down and the clutch is supported at a point between these outer points and its center so that the cen- (8.1 portion of the; clutch is normally lifted cm s of the lever-in iroicimity to the clutch normallyrest upon t e clutch, when there is The holder, a counter-weight for the movable fixed carbon holder, a movable carbon? carbon holder, a flexible connection between i the carbon holder and the counter-weight the clutch adapted to operate the same to cause it to engage the flexible connection, l and electro-magnetic means for moving the 5 frame.

4. In an inverted arc lamp, a frame, an upper fixed carbon holder, at lov. er movable carbon holder, a 'counter-.teight, a pulley, a flexible connection from saidcarbon holder over said pulley to said weight maintaining the carbon holder in raised position, a clutch I engaging the flexible eonnc-ctimi on the weight side of the pulley, and electromagnetic means for operating said clutch.

5.'In an inverted are lamp, a frame, an

, up )ei fixed carbon holder. a lower carbon ho der, a weight, a flexible connection between the \i'ei'ght and holder, a pulley over nhichsaid flexible connection passes, a guide for said Weight, a clutch engaging the flexible connection upon the weight side of the pulley, a yoke supporting said clutch and operating it to engage the flexible connection witlrinoveiuent of the yoke, pivots for said oke, and electro-magnetic means for moving said yoke.

'6. In an inverted arc lamp, a frame, an upper fixed carbon holder, alower carbon holder, .0, weight adapted, to maintain said lovser holder in raised position, a flexible connection between the weight and bolder and secured to said vtq iglit, a pulleyover which said flcxiliile v connection is. passed, a clutch engaging said flexible connection, a frame for operating said clutch, a dash pot' and connections restraining movementof said frame, and electro-magnetic means for causing the frame tooperate the clutch.

7. In an inverted arc lamp, a frame, an up erffixed carbon holder, a ion er carbon ho der, a pulley, a flexible connection passingover said pulley, a v. eight at the opposite end of said flexible connection adapted to overcome the v-ieight'of the lower carbon holder and of the carbon, a guide for said rt'eight, a

clutch engaging the flexible connection, a frame supporting and operating said clutch,

a dash pot and connections opposing-movement of said t'rame, and electro-iuagnctic means for moving the frame and operating the clutch.

8. In an inverted arc lamp, a frame, an upper'fixed carbon holder, at loiter carbon ho der, a flexible connection attached thereto, a pulley about which said flexible eonnection is passed a weight upon the other upper fixed cat-lam holder, at lower movable carbon holder, a ".ieightand connections att acbed thereto tending to cause movement of said lowerca rbon holder, means for moving the r, eight and a damper directly connected with said .veight retarding-the said movement.

' 10. In an inverted are lamp, a frame, an upper carbon holder, :1 lower carbon holder, a weight tending to maintain the carbon holder in a raised position, and a dash pot cooperating with said weight to retard th movement of the carbon holder. 11. In an inverted arc lamp, a frame, an upper carbon holder, a lower carbon holder, aweight in excess of the Weight of the care bon holder and carbon, a flexible connection between the carbon holder and Weight, a cylinder surrounding said weight and for I which said weight acts as a dash pot piston,- 5

ho der,-a weight and chain for maintaining it in rais'ed'position, a dash pot directly controlling the movement of the carbon holder, means for intermittently operating the carbonholder,:-and a dash pot retarding the operation o'fthe \vei'ht.

13. Inan inverte arc lamp, 2). frame, an up er fixed carbon holder, a lower carbon ho der, a \veiglitand connections exertingan upward pull on said carbon holder, and a cylinder directly damping the movement of said Weight.

14. In an inverted are lamp, 2]. frame, a fixed upper carbon holder, a movable lower carbon holder, a neight in excess. of the height of the loner carbon holder and carbon, a pulley, a flexible connection between the lower carbon holder and the weight passing over the pulley, a damper-cylinder sur-- rounding said weight, and electro magnetic means'on the weight side of the pulley for lifting said weight. t

CHRISTIAN J. TOERRING.

Witnesses:

H. M. K NZE, K. DWYER. 

